Re: ghci and ld scripts
On Fri, 2004-05-21 at 17:22, Sven Panne wrote: Simon Peyton-Jones wrote: We've no idea what to do here. In your case it'd be possible to just ignore the script, but presumably not so in general. [...] I've just made a quick test on my SuSE 9.1 Linux and it seems to be the case that an explicit -lpthread is not necessary anymore, even for programs using pthread calls. Strange, but handy. :-) Could you try if things work for you without adding pthread to extra_libraries? That does seem to work, thanks. The joys of linker magic. I guess that solves my immediate problem, but doesn't help answer Simon's question of what we do in general. :-( If we were using .so's for packages rather than .o's then we'd be using the system linker and we wouldn't have the problem, but that is a longer term project. Duncan ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: ghci and ld scripts
Simon Peyton-Jones wrote: We've no idea what to do here. In your case it'd be possible to just ignore the script, but presumably not so in general. [...] I've just made a quick test on my SuSE 9.1 Linux and it seems to be the case that an explicit -lpthread is not necessary anymore, even for programs using pthread calls. Strange, but handy. :-) Could you try if things work for you without adding pthread to extra_libraries? Another way would be using some kind of autoconf/shell magic to test for the linker script and install a link to /lib/libpthread.so.0 with the name myownpthread.so to the installation directory of your package and add myonwpthread to extra_libraries. Ugly... Cheers, S. ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
ghci and ld scripts
So here's the problem: We have a Haskell binding to a C library (one of the gtk extension libs) which uses the pthread library. So we put pthread in the extra_libraries section of our ghc package conf file. This works fine when building standalone programs, however when we try and use this package in ghci we get this error: ... Loading package gtk2 ... linking ... done. Loading package sourceview ... ghc-6.2.1: can't load .so/.DLL for: pthread (/usr/lib/libpthread.so: invalid ELF header) Inspecting /usr/lib/libpthread.so we find that indeed it is not a .so file but a gnu ld script: /* GNU ld script Use the shared library, but some functions are only in the static library, so try that secondarily. */ OUTPUT_FORMAT(elf32-i386) GROUP ( /lib/libpthread.so.0 /usr/lib/libpthread_nonshared.a ) So we should get ghci to dynamically load /lib/libpthread.so.0, however there is no way to specify this in the package.conf file. It turns out that we don't need ghci to load this .so because it is a dep of another .so that we do load, however if I leave it out then building standalone progs would fail to link. Has anyone come across this before? How do you deal with it? Duncan ___ Glasgow-haskell-users mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
